Steam-drier.



' .No. 876,347. PATENTED JAN. 14. 1908.

R. G. HAGEMAN & G. G. BRODERSON. STEAM DRIER.

APPLICATION FILED PEB.18.1907.

I UNITED STATES PATENT ;OFFICF.

ROBERT c. HAGEMAN AND GEORGE o. BRODERSON, or SAN FRANCISCO, CALIFORNIA STEAM-DRIER.

Specification of Letters Patent.

Application filed February 1907-- Serial No. 357.847

Patented Jan. 14, 1908.

To all whom it may concern:

Be it known that we, ROBERT C. HAGEMAN and GEORGE O. BRoDERsoN, citizens of the United States, residing at San Francisco, in

the county of San Francisco and State of- California, have invented new and useful Improvements in St68,Il1-'DI16IS, of winch the following 13 a specification.

The object of the present invention is to a sectional view of the upper portion of a boiler equipped with our improved steam drier, Fig. 2is an enlarged vertical section of,

the drier.

below the up er edge of the wall 5.

In this invention advantage is taken of the greater momentuinpossessed by the moist particles carried by the steam than that of the dry steam, to separate'the moisture from the steam, and this is accomplished by,

the following construction.

1 indicates the shell of a steam boiler, in which the line marked 2 represents the water line. Depending by means of hangers 3 secured to a reinforced plate 4 in the top of said shell is a cylindrical Wall 5, to the lower ed e of which is secured a conical or funne -shaped receiver 6, connected at the bottonrto a drain tube 7, whichdescemls to the water level. Secured to said reinforcing ,plate 4 and depending, therefrom within the wall 5 is a cylindrical wall 8, the lower edge of which is free, and considerably ending from angers 9 secured to the reinorcing plate 4 is a third cylindrical wall 10 within the wall 8, and to the lower edge of said wall 10 is attached a conical or funnelwater line of the boiler.

registering vertical y with the edge of the steam pipe.

It is to be remembered that the steam escaping from a boiler has considerable vevelocity.

ermit only d-ry steam locity, and it is in order to take advantage of this fact that the above construction is provided. I/Vhen the steam has passed over the upper edge of the wall 5, it descends between thewalls 5 and 8 with considerable In order to escape to a region of lower pressure the steam has to make a quick turn around the lower edge of the wall 8. The dry steam, having less momentum than the'moist particles, is able to make this turn with comparative ease, but the moist particles, having greater momentum than the dry steam, are carried downwards into the space beneath the baiiie plate 16, and into the annular space between the tubes 7 and 12. The dry steam which has escaped upwards past the lower edge of the wall 8 now passes over the upper edge of the wall 10 and down between said wall and the steam pipe, and

the operation of wringing the moisture from the steam by means of its greater momentum is now repeated.

Inasmuch as the operation of this invention is dependent upon the velocity of the steam, it is important that this velocity.

should be properly regulated at the several points i'n'the path of the steam. It is desirablethat the velocity in its u ward path after turning the lower edge 0" either the wall 8 or the steam pipe 13 should be not greater than the velocity before turning said edge, otherwise there would be a tendency to carry moisture with the steam and the object of the invention would be defeated. For this urpose the cross sectional area of the annu ar space between the walls 8 and 10 is not less than that between the walls 5 and S, and in the same manner the cross sectional area of the steam pipe is not less than that ol should there be any such passage, said water will be th10wn back by striking the under surface of theballlo plates.

Lelaimz In a steam drier, in combination with a boiler shell, and a steam pipe extending-upward therefrom, a wall around said pipe. its upper edge extending above the-lower edge oi the steam pipe, but open at the top to per-- lower edge 0 mit the steam to pass thereover to said pipe, a funnel-shaped receiver connected to the said Wall and having a drain tube extending downwards therefrom toward thewater line of the boiler, a baflle plate sup-- ported above the upper end of said tube, and

beneath the steam pipe a second wall extending around the 'first Wall closed at the top to prevent-the passage of steam thereover, a [0,

third wall supported around the second wall,

f open 'at-the topito permit the'passage of steam'thereover to the lower part of the secondwail, a funnel-shapedreceiver connected to the lower edge of the third wall, a tube leading therefrom down toward the water line of the boiler, and a baflie plate supported said pipe into-the first Wall, and the.cross sectional area of theiannular space between the. first and second walls being not less than that between the second and third walls.

In testimony whereof we have hereunto set our hands in the presence of two sub- "scribing witnesses;

ROBERT C. HAGEMAN. .GrEORGrE O. BRODERSON. Witnesses:

FRANCIS M. WRIGnT, D. B. RICHARDS. 

